Edward gilbert sparks



(N0 Iviadel.)

E. G. SPARKS.

PREPARATION OF PARAPPINB OE WAX PAPER.

Patented Sept. 22, 1885.

IN'VBNTOR:

(5 5 'a/wg BY ATTORNEYS.

WITNESSES Elm re STATES ATENT FFEQEC EDNVARD GILBERT SPARKS, OF NEWYORK, N. Y.

PREPARATION OF PARAFFINE OR WAX PAPER.

SPECIPICATIQN forming part of Letters Patent No. 326,687, datedSeptember 22, 1885. Application filed December 13, 1884. (No model.)

To aZZ whom it may concern:

Be it known that I, EDWARD G. SPARKS, of the city, county, and State ofNew York, have invented certain new and useful Improve ments in thePreparation of Pal-affine or \Vax Paper, of which the following is afull, clear, and exact description.

This invention relates to the preparation of paper for variouspreservative purposes, and more especially for the exclusion of moistureor air and dampness when the paper is used as a wrapper or cover. Paperhas had such preservative character given to it by coating orincorporating with it wax or other fatty n1attersuch as paraffine-and isusually known as wax-paper, which will be the term here used indescribing the invention. The process heretofore used for such purposehas been to run the plain paper over a roller covered with melted wax insuch manner that it would be only smeared with the wax on its one sideor surface, said wax afterward being forcibly pressed into and partiallythrough the paper and incorporated with it, one side of the paper beingthus left unprotected with the wax. v

My invention produces a superior waxpaper in which both sides arethoroughly and evenly coated with the wax, and in which the wax isplaced upon the surfaces of the paper just where it is needed withoutfully filling the body of the paper. \Vax-paper thus made may be appliedwith the same advantage, either side outermost, and, by not filling thebody of the paper with wax, a saving in wax is made, and consequently asaving in the cost of manufacturing the wax-paper.

Reference is to be had to the accompanying drawings, forming part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 represents a longitudinal sectional elevation of an apparatusfor making wax-paper in accordance with my invention; Fig. 2, a faceview of a roller-guide for the paper used in the vat or troughcontaining the melted wax with attached means for adjusting said rollerwhen introducing the paper or for vary ing the immersion of the paper inthe wax. Fig. 3 is a view upon a larger scale than shown in Fig. 1 ofcertain scrapers used to remove the surplus wax from the paper; and Fig.4, a

sectional View of a piece of my improved waxpaper.

A in Fig. 11. indicates the roll or webbing of paper to be waxed mountedon a suitable drum or reel, A, carried by the frame of the apparatus atthe one end thereof, and B is a winding-reel arranged at a properdistance apart or at the opposite end of the apparatus for taking up thepaper after it has been waxed, and for drawing the paper through theapparatus. The paper roll or webbing A is caused to first pass up andover a loose guide-roller, G, and from thence down and under a furtherloose guide-roller, 1), in the trough E, which contains the melted waxand which forms the wax-bath. This guide or roller D is so arranged thatwhen the process is being carried outit is wholly or mostly submerged inthe melted wax b or" the bath, whereby the paper in passing down to andup from said roller has both its sides or surfaces exposed to the wax,and so that when it leaves the bath it is waxed on both sides instead ofonly on one side, as heretofore. Said roller D is adjusted to its properposition in the bath. and provision made for easy adj ustmcut of thepaper when setting up a new roll by hanging the roller in a frame, G,which is made capable of being moved up or down within grooved ways 0 inthe ends of the trough to give a proper immersion of the roller, and toraise it out of the wax when setting up a new roll of paper. After thepaper leaves the bath it is passed up between two series. H H, ofopposite side scrapers, (I, each series or frame of scrapers, which arehere shown to occupy a slightly-inclined position, having any number ofscrapers arranged one above the other, and the scrapers in either framebeing so arranged that they are intermediate of and project in betweenthe scrapers of the other series or frame, thus causing the paper, as itpasses up between the two sets of scrapcrs,to move in a zigzag course.This flexing of the paper is important to secure a perfect removal ofthe surplus wax and to give a coating of the required thickness andevenness on the opposite sides or surfaces of the paper, and suchflexing action and strain on the paper is made adjustable to meetdifferent require ments. This may be done by making the one frame orseries, H, of scrapers fixed, and the other frame or series, H,adjustable by a slide and set-screw, as shown, or otherwise, to or fromthe fixed frame. In this way the thickness of the wax left on the paperby the pressure of the scrapers may be regulated to the greatest nicetyand the surplus wax be returned to the bath. Both the wax in the troughand the scrapers for removing surplus wax may be heated by steam-pipes ein the trough and frames carrying the scrapers, or the same may beotherwise heated, as desired. From the scrapers the waxed paper passesup over one or more guide-rollers, I, to the takeup and draft-reel B.This reel is set at a suitable distance from the scrapers to allow ofthe wax cooling or setting on the paper before the paper is wound on thereel. WVax-paper thus made will, as shown in Fig. 4, be much superior,and may be produced much cheaper, it being evenly coated with the wax aa on its opposite sides, Without the body of the paper A being fullyfilled with the wax, thus applying the wax where it is-required, andsaving it where the same is not needed, and insuring .a unifromthickness of wax or coating on both sides of the paper alike. It mayhere be observed that the scraper-frames H H are shown in the drawingsimmediately over or projecting at their lower ends down into the upperspace of the trough E on the delivering side of the roller-guide D.These frames, which are set at a suitable distance apart, with the one,H, of them adjustable along the main frame, as by an attached slottedsliding support, f, and setscrew gto vary the distance of the framesapart, or rather the projection of scrapers on them between each other,are kept sufficiently heated by the steam-pipes e, or otherwise, to heator warm the scrapers (1, so that the wax on the paper during the passageof the latter between the scrapers will be kept warm or in its meltedcondition to insure the smooth or proper laying of the wax on oppositesides of the paper simultaneously and removal of surplus wax therefromand return the same back to the trough.

The scrapers d d, which may have a chiseledge, as shown, and be securedby angular back extensions to the inner faces of the frames H H, shouldbe of a length or width on their edges to take in the whole width of thepaper passing in between them.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. The scraper-frames H H, constructed upon their inner faces withalternately-projecting blades 01 and with heating-pipes 'arranged behindthe blades, substantially as shown and described.

2. The combination, substantially as described,of the scraper-frames HH,each frame having projecting scraper-blades and heatingpipes, wherebythe blades will be heated and the waxed paper will be heated upon bothsides simultaneously and be scraped upon both 7 sides as it passesbetween the frames, as set forth.

3. In an apparatus for preparing waxed paper, the combination, as hereindescribed, of

the following instrumentalities, namely: a

tank for containing the hot wax, a device within the tank forsimultaneously conducting both sides of the paper into contact with thehot wax, and heated scraper frames with hot blades arranged above thetank for simultaneously heating the waxed paper on both sides and alsoscraping the waxed paper on bot-h sides during the passage between thescraperframes, as set forth.

EDWARD GILBERT SPARKS. Witnesses:

EDGAR TATE, CHAS. T. SOHIVELY.

